roorbaoh



W. L. ROOR'BAOH.

BOTTLE STOPPER Patented Aug. 4, 1885.

INVENTOR: M I

ATTORNEY.

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UNITED STATES PATENT OFFICE.

WILLIAM L. ROORBAQH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGN OR OFONE-HALF TO S. 'IWVITOHELL 85 BROTHER, OF SAME PLACE.

BOTTLE-STOPPER.

SPECIFICATION forming part of Letters Patent No.323,737, dated August 4,1885.

Application filed February 18, 1884. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM L. RooEEAcH, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in Bottle Stoppers, whichimprovement is fully set forth in the following specification andaccompanying drawings, in which Figure 1 is a vertical section of abottle and stopper embodying my 'invention. Fig. 2 is a side elevationof the seat of the stopper.

Similar letters of reference indicate corresponding parts in the twofigures.

My invention relates to the class of bottlestoppers in which a bottlewith an internallygrooved neck is used in connection with packing and aglobular stopper, the present invention being an improvement in thebottle st0pper for which Letters Patent of the United States N 0.272,775 were granted to me on the 20th day of February, 1883.

Referring to the drawings, A represents a bottle, andB represents agroove on the inner face of the neck thereof, said groove having top andbottom horizontally-extending walls, a, and two inclined faces, a a, theinclinations extending in opposite directions, forming at their junctiona ridge similar to that shown in my former patent.

G represents a rubber bushing or packing which is fitted to the groove Band constructed in Fig. 2 of two truncated cones, c c, united at theirnarrow ends, so as to conform exteriorly to the shape of the groove 13,the inner face being. inclined inwardly from the top and bottom, thepacking,however,being of greater diameter than said groove, so that itrequires to be compressed in order to be fitted in position, and when itis located it hugs the ridge of the neck and spreads into the upper andlower faces, a a, of the groove, leaving a ridge, 1), on the packing.

1) represents a spherical or globular stopper, the diameter whereof isless than the space within the ridge of the packing, the stopper beinginserted into the bottle prior to location of the packing, the latterreducing said space and producing a seat for the stopper, which, as isevident, closes upward thereagainst.

The bottle is filled and charged in any suitable manner and the pressurewithin the same holds the stopper on its seat. When the bottle is to beopened, the stopper is 5 forced downwardly, thus overcoming the internalpressure and causing it to leave the seat.

In my former patent the packing is of cylindrical form, and whencompressed it as- 6 sumes the double conical or inclined form of thegroove, but this is only true to a limited extent, for the upper andlower portions of the packing are liable to remain loose and to slipfrom position, thus imperfectly holding 6 the stopper. I

In the present case the exterior of the packing is primarily of theshape of the groove, and when the packing is compressed and located itexpands and fully occupies said 7 groove and tightly rests therein, sothat its upper and lower edges abut against the upper and lower walls ofthe groove without being uncovered or liable to uncover, and

the packing is reliably restrained by the up- 7 per wall of the grooveand prevented from slipping off when the packing is forced upwardly bythe stopper, due to the pressure within the bottle. The construction ofthe packing also forms a tight joint at all points 8 between the packingand walls of the groove,

whereby leakage thereat is prevented.

It will also be seen that the stopper makes a joint on the rise of theinner periphery of the packing, thus keeping the contents of 8 thebottle from coming in contact with the rubber and preventing the stopperfrom being forced out by pressure from within the bottle.

Having thus described my invention, what I 5 claim as new, anddesire tosecure by Letters Patent, is-

A bottle formed with a groove, 13, in its neck, the same having twoinclined faces, a

a, and top and bottom walls, a a, and prog vided with a rubber packing,0, having both its inner and outer faces inclined respectively inopposite directions to conform to the groove 13, the top edge of saidpacking being inclosed by the upper wall, a, of 1

